Siemens offers a 24-Door Polarion advent calendar with a lot of neat extensions, meet the experts and others. Although most things are really held in the context of Christmas, the technical stuff and free consultings are really interesting. So don’t miss it and take a look into it!
You can find the Playlist here: https://www.youtube.com/watch?v=ya72_UhvQXI&list=PLYGbB3CefExRirfCV-U1zOw8LX1mU0g0h
Here the 9th door as example:
The Polarion Blog 